This is a cool vest with good breathability thanks to its mesh material and a cooling function. - Brand: WindCore - Color: Black - Features: Cooling function - Battery: 2 included - Material: Mesh I bought this for the summer, but it's in super good condition, having only been used for 2 hours once. It can also be used in winter to keep warm. Warranty included. Please note that the box is not included. Thank you for looking.